.head {
    width: 100%;
    height: 64px;
    position: absolute;
    z-index: 100;
    min-width: 1200px;
    border-bottom: 3px solid #ccc;
}

#bor {
    border-bottom: 3px solid #ccc;
}

.headb a {
    line-height: 64px;
    display: inline-block;
    text-align: center;
    margin-left: 36px;
    color: rgb(0, 183, 255);
}

.headb a:hover {
    color: rgb(195, 255, 0);
    border-bottom: 3px solid rgb(72, 255, 0);
}

.headb {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.heada {
    margin-top: 16px;
    margin-left: 30px;
}

.headc {
    line-height: 64px;
}

.headc button {
    margin-right: 20px;
    border-radius: 10px;
    width: 60px;
    line-height: 24px;
    font-size: 14px;
    color: #fff;
}

.buttona {
    background-color: rgba(135, 207, 235, 0.8);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.buttonb {
    background-color: red;
    border: none;
}